A 28-year-old woman gave birth to a full-term male infant weighing 4.1 kg. The labor and delivery were unremarkable, and the infant and mother were discharged home 2 days postpartum. At day 4, the mother brings the baby to the pediatrician, complaining that he has red eyes. Physical examination reveals red eyes and bilateral mucopurulent discharge. The mother explains that the discharge seemed to "pour out of his eyes" when she first opened his lids, but now it just seems to be constant. On examination, both of the baby's eyes are moderately injected with a definite purulent discharge. His corneas are clear and his pupils react normally.